dependency

1. N-COUNT A dependency is a country which is controlled by another country. 附屬國

...the tiny British dependency of Montserrat in the eastern Caribbean. …東加勒比地區英國的小附屬國矇特塞拉特島。

2. N-UNCOUNT You talk about someone's dependency when they have a deep emotional, physical, or financial need for a particular person or thing, especially one that you consider excessive or undesirable. 依賴

We saw his dependency on his mother and worried that he might not survive long if anything happened to her. 我們看到他對母親的依賴，擔心萬一她有個閃失，他也會活不長。

3. N-VAR If you talk about alcohol dependency or chemical dependency, you are referring to a situation where someone is an alcoholic or is addicted to drugs. (毒、酒) 癮[美國英語]

In 1985, he began to show signs of alcohol and drug dependency. 1985年，他開始表現出酗酒和吸毒成癮的跡象。